function changenavbg(k)
{if(k==1)
	{getObject('li1').className='onsec';}
	else
	{getObject('li1').className='unsec1';}
	for(i=2;i<=7;i++)
	{if(i==k)
		{getObject('li'+i).className='onsec';}
		else
		{getObject('li'+i).className='unsec';}
	}
}

function showSubmenu(n)
{var navID = new Array ("subnav_0","subnav_1","subnav_2","subnav_3","subnav_4")
if (n>-1)
	{for (var i=0;i < navID.length;i++)
		{if (n==i)
			{getObject(navID[i]).style.display=""}
			else
			{getObject(navID[i]).style.display="none"}
		}
	}
 	else
	{for (var i=0;i < navID.length;i++)
		{getObject(navID[i]).style.display="none"}
	}
}
 
function getObject(objectId)
{if(document.getElementById && document.getElementById(objectId))
	{// W3C DOM
	return document.getElementById(objectId);}
	else if (document.all && document.all(objectId))
	{// MSIE 4 DOM
	return document.all(objectId);}
	else if (document.layers && document.layers[objectId])
	{// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];}
	else
	{return false;}
}